Autogenous-welding apparatus



A. V. JOHANSON.

AUTOGENOUS WELDING APPARATUS.

APPLICATION FILED APR. 22. I919.

Patented Nov. 2,v 1920.

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H. V. Johan/son. 15 dWJE M.

f son, subject of the that the valve box of the welding apparatus Y v uuirsoffer-Arias PATENT oFr ca.

.axnr. vrxron .ronanson, ors'rocxnonm, SWEDEN.

naaneaa. e Application and April 22,

To allwkom it may concern.

Be it known thatI Axes Vrnron JOHAN- I Kingoi Sweden, mid-- ing at. 153 llsogatan, Stockholm, Sweden, have invented certain new and useful Improvements in Auto enousWelding Apparatus, of which the following is a specification.

The present invention relates to an autog' enous welding apparatus, which can be easily changed to a using apparatus. The characteristic feature of the invention conslsts in is provided with an extra oxygen gas outlet controlled through a valve so that after the removing of the removably mounted welding burner a fusing. burner having a separate oxygen gas pipe can beconnected to the valve box. v

The invention is shown in ,the annexed drawings. Figure 1 is a longitudinal section of the valve box having the welding burner placed thereon, and Fig. 2' isa longitudinal section of the valve box having the fusin burner placed thereon.

Re erring more particularly to the draw-' ings especially Fig. 1, the body portion of the apparatus is in the form of a valve box 1 having a threaded bore 2 in which is fitted one of the reduced threaded extensions 5 of a valve 4, the opposite reduced extension of which is designed for connection with an acetylene gas pipe. The bore 2 is reduced to leave a relative narrow duct 6 which passes through a reduced threaded extension in the opposite end of the body portion while the outer end of the duct is flared. Arranged with the extension through the duct 6 is a pipe extension 9 which is integral with the adjacent reduced extension 5 of the valve 4, the outer end of the pipe 9 being tapered. In addition 'the body portion is provided with a reduced threaded extension 10 for association with an oxygen gas pipe. Provided through the body portion and the extension 10 is a secondary duct 11 which has a branch duct 14: leading therefrom and connected with the duct 6, a valve 13 of the needle type being mounted in the body portion for controlling the passage of nuroennousflwnnnme APPARATUS.

Specification of Letters Yatent.

' is provided with an annular conical 1919. Serial No. 291,943.'

are mixed when] entering into, the mixmg pipe 8 ofthe weldin burner 80.. The oxy-' gen supply is control ed by the valve 13.-

the junction piece 7 by means of a nut 17.

Patented Nov. 2, 1920.

he reduced exten- The mixing pipe 8 is removably-secured to After unscrewing the said nut "the pipe'8 together with the welding burnermay be removed, and the main pipe '18- of ajfusing burner 19 having a separate oxygen gas pipe 20 may be secured to the junction pipe means of the nut 17 The oxygen gas pipe l 20 may be secured ina fsimilarfmanner to the threaded extension'15f,.as'shownin Fig. 2. The main ipe. 180i the said fusing burner is provi eda tfthe end adapted to be 4 connected to the threaded extension 7 with a number (for instance 4) of obliquely arranged ducts 21 adapted to connect the duct 6 surrounding the pipe 9 with the central.

duct 22 of the pipe 18. .In order-that the pipe 18 may be securely held in proper po- 7, so that the ducts 21 will alwa s communicate with the duct 6, the end 0 the pi. e 18 ange 'sition relatively to the threaded extenslon'.

23, which enters into a correspondingly shaped recess at the end tension 7.

In using the fusing burner the valves" 4 and 16 are held open, so that the acetylene of the threaded exgas passes through the pipe 9 to the pipe 18,

while the oxygen gas enters into the pipe 20.

Besides, the valve 13 is opened more or less in order to allow the oxygen gas to .pass to the duct 6 surrounding the pipe 9, whereby the said gas enters through the ducts 21 to the central duct 22 of the'pipe 18 and is mixed with the acetylene gas. The fusing burneris constructed in a known manner and will, therefore, not be particularly described. I

Thus, by the described form of the body" portion a welding burner may in a simple manner he changed to a fusing burner or vice versa and, consequently, it IS not necessary in performi welding-and fusin gop erationsto have t e disposal of two com vplete apparatuses, as heretofore required; :3 Hav ng nowdescribed myinvention What.f-.- 'I- claim as new desireto secure bycLetf- In an apparatus 'of'the charaeterdescribed";

the stem to the outer edge of the stem so 'fas-to' communicate with the reduced portion of, the bore and serving as a means for perreduced and' arranged within and in spaced:

ters Patent is :1 5

in combination, a body portion provided with a boreone end of which-is'jenlarged and threaded,favalve having a thre'aded ex I tension engaged with the threaded bore and;

' the reduced portionof the bore of the body I portion to bore in the stem of the burner. relation to the reduced portion of the bore, ,..Initestimony. wheifeofi lzixave afixed my the valve and its extension being provided' with .a bore through which a supply of v acetylene gas is controlled, the body portion being also provided with. a valve controlled ductcomznunicating with thereduced portion. of the'bore and to which oxygen is suphaving. the outernportion'of such extension "plied iri-theregulatedmanner, and a burner having a stem provided with a longitudinal 7 There connected to the body portion so that the. bore communicates with the bore in the Ivalve extension, and the stem being also provided witli a plurality of obliquely arranged ducts extending from the bore of mittingof the passage of: oxygen from signaturein presence-of 'tiirowitnesses. v, AxELvI Ton-aoHAnsoN;' Y Witnesses L i v HAXEL EHRNER 

